Help! I suspect my child has head lice. How to cure it?

Medikar and olive oil are 2 known solutions to me. Medikar as known doesn't remove it overnight. It requires multiple usage. You can try olive oil. It is thought to be an excellent smothering agent. Lice supposedly suffocate and die when the ooze plugs their breathing holes, but it needs to be applied overnight under a shower cap because lice can survive without breathing for hours. You'll also have to comb to remove nits, but the olive oil should help loosen them from the hair shafts.